CA2208014A1 - Method for fiberizing mineral material with organic material - Google Patents
Method for fiberizing mineral material with organic materialInfo
- Publication number
- CA2208014A1 CA2208014A1 CA002208014A CA2208014A CA2208014A1 CA 2208014 A1 CA2208014 A1 CA 2208014A1 CA 002208014 A CA002208014 A CA 002208014A CA 2208014 A CA2208014 A CA 2208014A CA 2208014 A1 CA2208014 A1 CA 2208014A1
- Authority
- CA
- Canada
- Prior art keywords
- spinner
- molten
- fibers
- organic material
- mineral
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
Links
- 239000000463 material Substances 0.000 title claims description 48
- 239000011368 organic material Substances 0.000 title claims description 39
- 238000000034 method Methods 0.000 title claims description 30
- 229910052500 inorganic mineral Inorganic materials 0.000 title claims description 15
- 239000011707 mineral Substances 0.000 title claims description 15
- 239000002557 mineral fiber Substances 0.000 claims description 36
- 239000000835 fiber Substances 0.000 claims description 21
- 230000002093 peripheral effect Effects 0.000 claims description 13
- 239000012768 molten material Substances 0.000 claims description 3
- 239000007789 gas Substances 0.000 claims description 2
- 229920000642 polymer Polymers 0.000 description 47
- 239000003365 glass fiber Substances 0.000 description 24
- 229920005594 polymer fiber Polymers 0.000 description 17
- 239000011521 glass Substances 0.000 description 13
- 239000011230 binding agent Substances 0.000 description 10
- 239000002861 polymer material Substances 0.000 description 6
- 230000015556 catabolic process Effects 0.000 description 4
- 238000006731 degradation reaction Methods 0.000 description 4
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 description 3
- 239000004734 Polyphenylene sulfide Substances 0.000 description 3
- 150000002500 ions Chemical class 0.000 description 3
- 229920000069 polyphenylene sulfide Polymers 0.000 description 3
- 229910000531 Co alloy Inorganic materials 0.000 description 2
- 229910000599 Cr alloy Inorganic materials 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 239000010426 asphalt Substances 0.000 description 2
- 239000000788 chromium alloy Substances 0.000 description 2
- 239000010941 cobalt Substances 0.000 description 2
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- -1 polyethylene Polymers 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 238000009834 vaporization Methods 0.000 description 2
- 230000008016 vaporization Effects 0.000 description 2
- 239000004677 Nylon Substances 0.000 description 1
- 239000004952 Polyamide Substances 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- 239000004793 Polystyrene Substances 0.000 description 1
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 239000004202 carbamide Substances 0.000 description 1
- 238000005119 centrifugation Methods 0.000 description 1
- 229910010293 ceramic material Inorganic materials 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000012774 insulation material Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 239000006060 molten glass Substances 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- GUGLPELUECBSDK-UHFFFAOYSA-N phenol;urea Chemical compound NC(N)=O.OC1=CC=CC=C1 GUGLPELUECBSDK-UHFFFAOYSA-N 0.000 description 1
- 229920002647 polyamide Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 238000012667 polymer degradation Methods 0.000 description 1
- 229920000575 polymersome Polymers 0.000 description 1
- 229920000098 polyolefin Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 229920002223 polystyrene Polymers 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
- 229920001187 thermosetting polymer Polymers 0.000 description 1
- 239000004416 thermosoftening plastic Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B37/00—Manufacture or treatment of flakes, fibres, or filaments from softened glass, minerals, or slags
- C03B37/01—Manufacture of glass fibres or filaments
- C03B37/04—Manufacture of glass fibres or filaments by using centrifugal force, e.g. spinning through radial orifices; Construction of the spinner cups therefor
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B37/00—Manufacture or treatment of flakes, fibres, or filaments from softened glass, minerals, or slags
- C03B37/01—Manufacture of glass fibres or filaments
- C03B37/04—Manufacture of glass fibres or filaments by using centrifugal force, e.g. spinning through radial orifices; Construction of the spinner cups therefor
- C03B37/045—Construction of the spinner cups
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/74—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls
- E04B1/76—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls specifically with respect to heat only
- E04B2001/7687—Crumble resistant fibrous blankets or panels using adhesives or meltable fibres
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Geochemistry & Mineralogy (AREA)
- Manufacturing & Machinery (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Organic Chemistry (AREA)
- Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
- Chemical Treatment Of Fibers During Manufacturing Processes (AREA)
- Inorganic Fibers (AREA)
- Manufacture, Treatment Of Glass Fibers (AREA)
- Chemical Or Physical Treatment Of Fibers (AREA)
- Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
- Nitrogen Condensed Heterocyclic Rings (AREA)
Abstract
A method for fiberizing mineral material (18) with organic material (36) includes centrifuging mineral fibers (20) from molten mineral material (18) with a first rotating spinner (10), changing the direction of the mineral fibers (20) to form a downwardly moving veil (26) of mineral fibers (20), establishing a flow of molten organic material (36) moving toward a second rotating spinner (28) positioned within the veil (26), dividing the flow of molten organic material (36) into a plurality of streams, directing, by means of conduits (44), individual ones of the plurality of streams toward the peripheral wall (46) of the second rotating spinner (28), the conduits (44) shielding the molten organic material (36) from heat from the first rotating spinner (10), and centrifuging organic fibers (38) from the molten organic material (36).
Description
WO 96/20140 PCI'IUS9S/15239 METHOD FOR FIBERIZING MINERAL MATERIAL WITH ORGANIC MATERIAL
TECHNICAL FIELD
This invention relates to the production of mineral fiber products, and in S particular, mineral fiber products having organic or polymeric material applied to the mineral fibers. More particularly, this invention relates to cimlllt~neously centrifuging fibers from molten mineral material and molten organic m~tP.ri~l BACKGROUND ART
Mineral fibers, such as glass fibers, are useful for in~lllation and structural 10 products. Glass fibers for such products are typically made by feeding molten glass into a spinner, and centrifuging the fibers by rotating the spinner to form a dowllvvaldly moving cylindrical veil of glass fibers. Applied to the fibers are various organic co~tin{~s~
particularly binders for conl-e.,~ g the mineral fibers to each other to form insulation or structural products. Glass fiber in~ tion products are typically bonded together by urea 15 phenoVformaldehyde binder to form a spring-like matrix which can recover after co-lll" es~ion during paÇl~ging of the product. Typical urea phenol/formaldehyde binders have a molecular weight of about 600 in the uncured state, and these binders are usually applied in an aqueous nledillm by ~layil~g onto the glass fibers shortly after the fibers are formed.
One ofthe problems with applying aq~leo~.s organic binders ofthe prior art to cylindrical veils of mineral fibers is that a portion of the binder tends to t;vapolale prior to contact between the liquid binder drop and a mineral fiber in the veil. The evaporated binder material becomes a co..l ~, .;"~..1 in the exhaust air stream of the process and must be cleaned up in order to avoid pollution problems. Also, the binder material on the mineral 2~ fibers tends to be sticky, requiring extensive r.lç~ning ofthe fiber collection app~ s to prevent the build-up. of clumps of glass fiber insulation material which can drop into the product and cause a product defect.
A recently developed process to apply higher molecular weight binders to glass fibers uses a first spinner to produce a dowllvvaldly moving veil of glass fibers and a 30 second spinner, positioned within the veil, to form polymer fibers and to disllibule them into contact with the glass fibers in the veil. This process produces a col-...,;l~led inc~ tion pack having some polymer fibers and some glass fibers having a polymer co~ting This cofiberizing process is described in U.S. Patent Applic~tion Serial No. 08/079,413, which is hereby incorporated by rerere"ce, and which was filed June 23, 1993, naming Rakhchi, et al. as inventors, and is a~;g.~ed to the assignçe ofthe present invention.
One of the problems with the cofiberizing approach to inte, . ~
polymeric or organic material with glass fibers is that the polymeric m~t~ri~l is cA~oscd to a hostile envi,o~ ;"l. The polymer spinner is of l-çcçc~.ly positioned directly beneath the glass spinner in order to have the polymer material intersecting the veil of glass fibers at a high enough level for effective co.. ~ gl;.. g The glass spinner is opel~led at nearly 10 2000~F (1093~C), and a considerable amount of heat is radiated toward the polymer spinner and the polymer material within the spinner. F ~cecsive heating of the polymer material causes degradation of the polymer. Even more troublesome is the problem of fires. If the polymeric material is exposed to air and elevated tempe, alures, a portion of the polymeric material will vaporize and the comb-lction process will col.. e.~e. Burning 15 polymeric material is an lln~cceptable side effect ofthe process. It would be adv~nt~eouc for a cofibe,~ng process to be able to deliver the polymeric m~t~ri~l to the spinner in a manner which ...;~;...;,çs the thermal degradation ofthe polymeric material, and which reduces the exposure of molten polymeric material to air to prevent combustion.
DISCLOSURE OF INVENI ION
There has now been developed a method and app~alus for improving a cofiberizing process by ~hiçlding the molten polymeric material in the polymer spinner from exposure to some of the heat of the glass spinner, and from contact with air to prevent fires.
Acco, d;ng to this invention, there is now provided a method for 25 m~mlf~c~lring a mineral fiber product comprising centrifuging mineral fibers from molten mineral material with a first rotating spinner, rh~nging the direction of the mineral fibers to form a downwardly moving veil of mineral fibers, establishing a fiow of molten organic material moving toward a second rolâ~ing spinner positioned within the veil, dividing the flow of molten organic material into a plurality of streams, direcling, by means of cQnduit~, 30 individual ones of the plurality of streams toward the peripheral wall of the second rotating spinner, the conduits shielding the molten organic material from heat from the first rotating WO 96120140 PCTIUS95/1523~
spinner, and centrifuging organic fibers from the molten organic material. By shi~Pl~in~ the molten organic material from heat, the organic material is less subject to thermal degra~l~tio~, and the molten organic material can be ..~ ;..ed at a relatively cool temperature until the last moment, just before going through the spinner pprirhpral wall.
5 By chielrling the organic material from ~,~osu,~ to air, there is likely to be less chance of fire.
In a specific embodiment ofthe invention, the con~ tc are rola~ at the same speed or rotational rate as the second rotating spinner.
In another embodiment of the invention, the conduits have conduit outlets 10 which restrict the flow of molten material through the conduits so that no air enters the cond~itc, thereby preventing or red~.~ing the amount of vaporization of polymeric rn~t-Pri~l In yet another embodiment of the invention, a generally circular shield is positioned above the second spinner bottom wall, the shield Pyten~1ing radially outwardly from the spindle toward the peripheral wall of the second spinner, the shield and the 15 spinner bottom wall dP,finin~ an annular cavity having at least one cavity outlet positioned at the radially oLIlw~d edge of the shield, and the flow of molten organic m~tçti~l through the cavity outlet being restricted so that no air enters the cavity.
Accolding to this invention, there is also provided appa~ s for ~eli~lg mineral material with organic material comprising a first spinner mollnted for rolalioll 20 about an axis to form mineral fibers, means for ..h~g;"E the direction of the mineral fibers to form a downwardly moving veil of mineral fibers, a second spinner mounted for rotation and positioned within the veil, means for ect~bliching a flow of molten organic material moving toward the second . ~,la~ g spinner, means for dividing the flow of molten organic material into a plurality of streams, conduits for dilec~ g individual ones ofthe plurality of 25 streams toward the peripheral wall of the second rotating spinner, the contl--itc .ch;Pl~inp the molten organic material from heat from the first rotating spinner, and means for rotating the second spinner to cçntrifilge organic fibers from the molten organic material and to direct the organic fibers into contact with the veil of mineral fibers.
~ BRIEF DESCRIPTION OF DRAWINGS
Figure 1 is a sçh-Pm~tic cross-sec.tion~l view in elevation of app& ~ s for cofiberizing glass fibers and fibers of polymeric m~teri~l accoldil1g to the invention.
-WO 96t20140 PCI~/US95/15239 Figure 2 is a sch~ ic cross-sectiol ~l view in elevation ofthe polymer spinner of Figure 1, without molten polymer.
Figure 3 is a sçl-~..A~;c plan view ofthe polymer spinner of Figure 1, taken along lines 3-3 of Figure 2, showing molten polymer in the polymer spinner.
Figure 4 is a 5çl-e~ lic cross-sectiQn~l view in elevation of an embodiment of the pol,vmer spinner which conLahls a circular shield.
Figure 5 is a s~hem~fic cross-section~l view in elevation of an embodiment of the polymer spinner which cGI-lai--s a circular shield and a vertical interior wall.
Figure 6 is a scl-~ ;c cross-sectional view in elevation of an embodiment of 10 the polymer spinner which conlains a spinner cover.
BEST MODE FOR CARRYING OUT THE INVENTION
The invention will be described in terms of a glass fiber r~)lmillg operation, although it is to be understood that the invention can be practiced using other heat-softenable mineral material, such as rock, slag, and basalt.
As shown in Figure 1, glass spinner 10 rotates about axis of rotation 12 and is driven by the rotation of spindle 14. The glass spinner can be cast from a nickle/cobalt/chromium alloy as is co..Ll-.ollly known in the art. The spinner pc~i~he~al wall has numerous orifices 16 for the centrifugation of glass fibers, and prere.ably has between about 2,000 and about 50,000 orifices.
The glass spinner is supplied by molten stream of glass 18, which is centrifuged through the walls of the spinner in the form of glass fibers 20. The glass fibers are ~ ed in a soft, atten~l~kle state h~ .e~ lP~ly outside the spinner by the heat from annular burner 22, ~lthollgh in some glass fiber operations an external burner is not required. The radially traveling glass fibers are turned down by annular blower 24 into a 25 cylindrically shaped veil 26 of fibers, traveling dow..wardly, i.e., in the direction ofthe axis of the spinner. The process for creating the dow..w~dly moving cylindrical veil of glass fibers is well-known in the art.
Po.~itioned beneath the glass spinner is a second rotating spinner for distributing molten organic material into contact with the veil from a position within the 30 veil. In the embodiment shown in Figure 1, the second spinner is a polymer spinner 28, for distributing polymeric material into contact with the veil. The polymer spinner can be cast from nickle/cobalt/chromium alloy as used for the pro~lu~tion of glass fibers, or can be any other suitable spinner such as one from welded sl~inless steel. The polymer spinner p~.ipht;l~l wall has m~ ulls oAfices for the centAfugation of asphalt fibers, and p,~rel~ly has between about 500 and about 25,000 orifices. A polymer spinner s~cc~s~fi~lly used in a 5 glass fiber/PET cofil,el~l~ process had appl-ox;~ çly 3,500 orifices.
It is to be understood that any organic material capable of being fibeAzed can be supplied to the second or polymer spinner. Particularly useful eY~mples of polymers include such higher molecn~r weight polymeric material as polyethylene terephth~l~te (PET), poly~.opylene or polyphenylene sulfide (PPS). Other organic mateAals sllit~ble for 10 making fibers include nylon, polyc~l,ollale, polystyrene, polyamide, resins, vaAous polyolefins, ~cph~lts~ and other thermoplastic and thermoset materials.
The polymer spinner can be mounted on or ~ttaçhed to the glass spinner.
Preferably, the polymer spinner is mounted, via polymer spindle 30, in a manner which s physical contact with the glass spinner to reduce the thermal heat ll~lsrer by15 con~lction to the polymer material and the polymer spinner. To that end, the polymer spindle is p.er~lably adapted with a mounting bracket 32 having spacing nubs 34 to reduce co~ lctive heat Ll~1srer from the glass spinner, as shown in Figure 2. The spindle length is sufflcient to enable the introduction of the polymer fibers at a desirable height in the veil. If the polymer spinner is too high, the polymer fibers may be degraded, and may penetrate 20 and flow through the veil.
The polymer material is supplied to the polymer spinner in the form of stream 36 of molten polymer m~t~ri~l As shown, this stream can be fed through the hollow portion of the spindle. The molten polymer can be produced or supplied by using extruder eq~lipment com~only known to those in the art of polymeric materials, such as PET. The 25 temperature at which the molten polymer material is supplied depends upon the nature of the polymer. Polypropylene typically has a temperature of about 500~F (260~C) as it e..,elges from the extruder. Asphalt runs cooler at about 400~F (204~C), while PPS runs hotter at about 600~F (316~C).
Depending on the viscosities, surface t~n~ion, and other parameters ofthe 30 polymeric material, and on the rotation rate and orifice sizes ofthe polymer spinner, polymer fibers 38 may be produced from the polymer spinner. The polymer fibers travel radially outwardly where they meet and illlel mh~gle with the mineral fibers. The il~te. ~--;l~gled glass fibers and polymer fibers can be collected on any suitable device, such as conveyor 40, and formed into a co.. ;l-gled product or mat 42.
Since the glass fibers and glass ~hlnGl.7 operate at a tenlpGla~ulG a~l,roAc~ -g5 2000~F (1093~C), the polymer fibers are rapidly thrust into a region of high tellllJGlal~lG, causing the polymer fibers to soften. It has been found that some of the polymer fibers melt, forming droplets or other particles which attach ~LGlllsGl.~es to some of the mineral fibers. Others ofthe polymer fibers retain their fibrous shape, reslllting in the plesence of polymer fibers in the final mineral fiber product. The reason that some ofthe polymeric 10 material retains its fibrous shape, while other portions ofthe material form polymeric particles which attach themselves to the mineral fibers, is not known. It may be that some of the polymer fibers do not soften to the extent required to cause them to lose their fibrous shape and turn into a more spherical shape. Alternatively, it may be that, ~lthou~h all polymer fibers are soft~ne~, only a portion of them come into contact with mineral fibers 15 while in a softened con~lition The delivery of the polymeric material within the polymer spinner is f~cilit~ted by causing the polymeric material to flow within col.~l..;L~, such as pipes 44. As shown in Figures 2 and 3, the pipes extend radially outwardly from the polymer spindle toward polymer spinner peripheral wall 46. In operation, the polymeric m~t~ri~l flows 20 downwardly in the polymer spindle, and radially outwardly through the pipes. The molten polymeric material forms a layer or head on the spinner peliphel~l wall, and is c~ntrifi1ged through polymer orifices 48 to form the polymer fibers.
The pipes have outlets 50, which can be merely the open ends of the pipes, or can be a means for restricting or metering the flow of polymeric material flowing through 25 the pipes. Preferably the pipe outlet and pipe di~meter are sized approplia~ely for the operating conditions to insure that no air can enter the pipes. By preventing air from re~ching the polymeric material within the pipes, degradation of the polymeric material will be delayed until after the polymeric material exits the pipes. Optionally, the pipe outlets can be adapted with n( 7.7.1es' The pipes can be any conduits suitable for delivery ofthe polymeric material.
Pipes succes~fillly used in a cor~ g1ing process with PET were one-quarter inch (6.35 mm) inside ~ ele~ s~ ess steel tubes. Preferably there are at least four pipes, and most preferably eight pipes, ~lthol1gh more or less can be employed. The pipes can be mol~nted for rotation at the same rotational rate as the polymer spinner, or at a di~e~
rate. Optionally, the pipes can be in~ tetl with a ceramic material or any other suitable 5 material, to further ...il~;...;~e the effects of radiant heat and hot gases entering the polymer spinner through the spinner top openil,g 52.
As shown in Figure 4, the polymer spinner can be adapted with a generally flat plate-like mellll)er to cover the molten polymeric material to ...;..;...;~e the exposure to heat. This ..,~;".ber can be anything suitable to protect the polymeric material, such as 10 shield 54, which can be made of stainless steel or any other appropliale material. The shield can be generally annular in shape, e~ct~n-ling radially outwardly from the polymer spindle 30 toward the polymer spinner peripheral wall. The shield and the polymer spinner bottom wall 56 define a generally annular space or cavity 58 on the bottom ofthe spinner.
During operation, the polymeric material will flow through spindle openings 60 to fill the 15 cavity. The shield can be de~igned to provide a narrow opening, cavity outlet 62, at the radially outward shield edge 64. The cavity outlet can restrict the flow of polymeric material toward the polymer spinner peripheral wall, in a manner similar to the fimr.tion of the pipe outlets. The cavity outlet can be annular in shape, or can be a series of slots circull~lt;lllially spaced around the shield. A prime fimction ofthe cavity outlet is to 20 prevent air from reaching the cavity so that a minimllm of polymer degradation takes place.
Degradation leads to vaporization and possible fire problems.
An alternative embodiment of the invention, shown in Figure 5, provides for an extension at the end of the shield to further block exposure of the polymeric material to air and heat from sources external to the polymer spinner. Vertical interior wall 66 can be 25 positioned radially inwardly from the polymer spinner peliphel~l wall to define annular vertical cavity 68 where a body or head of polymeric material can ~ccumlll~te without exposure to air.
As shown in Figure 6, the shielding of the polymeric material can be accompli~hed by positioning a blocking means, such as spinner cover 70, at the top ofthe 30 polymer spinner. As shown, the molten polymeric material drops dowl,w~dly through the polymer spindle, flows through the spindle openings into the spinner, flows radially WO 96/20140 PCrlUS9SI1~;239 oulw~dly on the polymer spinner bottom wall and up the pcl;~h~l wall, and through the orifices to form polymer fibers.
It will be evident from the forego;l~ that various mo~ific~tionc can be made to this invention. Such, however, are considered as being within the scope of the invention.
INDUSTRIAL APPLICABILITY
The invention can be useful in the production of fibrous products of co",."i,~gled glass and polymer fibers for use as structural and thermal insulation products.
TECHNICAL FIELD
This invention relates to the production of mineral fiber products, and in S particular, mineral fiber products having organic or polymeric material applied to the mineral fibers. More particularly, this invention relates to cimlllt~neously centrifuging fibers from molten mineral material and molten organic m~tP.ri~l BACKGROUND ART
Mineral fibers, such as glass fibers, are useful for in~lllation and structural 10 products. Glass fibers for such products are typically made by feeding molten glass into a spinner, and centrifuging the fibers by rotating the spinner to form a dowllvvaldly moving cylindrical veil of glass fibers. Applied to the fibers are various organic co~tin{~s~
particularly binders for conl-e.,~ g the mineral fibers to each other to form insulation or structural products. Glass fiber in~ tion products are typically bonded together by urea 15 phenoVformaldehyde binder to form a spring-like matrix which can recover after co-lll" es~ion during paÇl~ging of the product. Typical urea phenol/formaldehyde binders have a molecular weight of about 600 in the uncured state, and these binders are usually applied in an aqueous nledillm by ~layil~g onto the glass fibers shortly after the fibers are formed.
One ofthe problems with applying aq~leo~.s organic binders ofthe prior art to cylindrical veils of mineral fibers is that a portion of the binder tends to t;vapolale prior to contact between the liquid binder drop and a mineral fiber in the veil. The evaporated binder material becomes a co..l ~, .;"~..1 in the exhaust air stream of the process and must be cleaned up in order to avoid pollution problems. Also, the binder material on the mineral 2~ fibers tends to be sticky, requiring extensive r.lç~ning ofthe fiber collection app~ s to prevent the build-up. of clumps of glass fiber insulation material which can drop into the product and cause a product defect.
A recently developed process to apply higher molecular weight binders to glass fibers uses a first spinner to produce a dowllvvaldly moving veil of glass fibers and a 30 second spinner, positioned within the veil, to form polymer fibers and to disllibule them into contact with the glass fibers in the veil. This process produces a col-...,;l~led inc~ tion pack having some polymer fibers and some glass fibers having a polymer co~ting This cofiberizing process is described in U.S. Patent Applic~tion Serial No. 08/079,413, which is hereby incorporated by rerere"ce, and which was filed June 23, 1993, naming Rakhchi, et al. as inventors, and is a~;g.~ed to the assignçe ofthe present invention.
One of the problems with the cofiberizing approach to inte, . ~
polymeric or organic material with glass fibers is that the polymeric m~t~ri~l is cA~oscd to a hostile envi,o~ ;"l. The polymer spinner is of l-çcçc~.ly positioned directly beneath the glass spinner in order to have the polymer material intersecting the veil of glass fibers at a high enough level for effective co.. ~ gl;.. g The glass spinner is opel~led at nearly 10 2000~F (1093~C), and a considerable amount of heat is radiated toward the polymer spinner and the polymer material within the spinner. F ~cecsive heating of the polymer material causes degradation of the polymer. Even more troublesome is the problem of fires. If the polymeric material is exposed to air and elevated tempe, alures, a portion of the polymeric material will vaporize and the comb-lction process will col.. e.~e. Burning 15 polymeric material is an lln~cceptable side effect ofthe process. It would be adv~nt~eouc for a cofibe,~ng process to be able to deliver the polymeric m~t~ri~l to the spinner in a manner which ...;~;...;,çs the thermal degradation ofthe polymeric material, and which reduces the exposure of molten polymeric material to air to prevent combustion.
DISCLOSURE OF INVENI ION
There has now been developed a method and app~alus for improving a cofiberizing process by ~hiçlding the molten polymeric material in the polymer spinner from exposure to some of the heat of the glass spinner, and from contact with air to prevent fires.
Acco, d;ng to this invention, there is now provided a method for 25 m~mlf~c~lring a mineral fiber product comprising centrifuging mineral fibers from molten mineral material with a first rotating spinner, rh~nging the direction of the mineral fibers to form a downwardly moving veil of mineral fibers, establishing a fiow of molten organic material moving toward a second rolâ~ing spinner positioned within the veil, dividing the flow of molten organic material into a plurality of streams, direcling, by means of cQnduit~, 30 individual ones of the plurality of streams toward the peripheral wall of the second rotating spinner, the conduits shielding the molten organic material from heat from the first rotating WO 96120140 PCTIUS95/1523~
spinner, and centrifuging organic fibers from the molten organic material. By shi~Pl~in~ the molten organic material from heat, the organic material is less subject to thermal degra~l~tio~, and the molten organic material can be ..~ ;..ed at a relatively cool temperature until the last moment, just before going through the spinner pprirhpral wall.
5 By chielrling the organic material from ~,~osu,~ to air, there is likely to be less chance of fire.
In a specific embodiment ofthe invention, the con~ tc are rola~ at the same speed or rotational rate as the second rotating spinner.
In another embodiment of the invention, the conduits have conduit outlets 10 which restrict the flow of molten material through the conduits so that no air enters the cond~itc, thereby preventing or red~.~ing the amount of vaporization of polymeric rn~t-Pri~l In yet another embodiment of the invention, a generally circular shield is positioned above the second spinner bottom wall, the shield Pyten~1ing radially outwardly from the spindle toward the peripheral wall of the second spinner, the shield and the 15 spinner bottom wall dP,finin~ an annular cavity having at least one cavity outlet positioned at the radially oLIlw~d edge of the shield, and the flow of molten organic m~tçti~l through the cavity outlet being restricted so that no air enters the cavity.
Accolding to this invention, there is also provided appa~ s for ~eli~lg mineral material with organic material comprising a first spinner mollnted for rolalioll 20 about an axis to form mineral fibers, means for ..h~g;"E the direction of the mineral fibers to form a downwardly moving veil of mineral fibers, a second spinner mounted for rotation and positioned within the veil, means for ect~bliching a flow of molten organic material moving toward the second . ~,la~ g spinner, means for dividing the flow of molten organic material into a plurality of streams, conduits for dilec~ g individual ones ofthe plurality of 25 streams toward the peripheral wall of the second rotating spinner, the contl--itc .ch;Pl~inp the molten organic material from heat from the first rotating spinner, and means for rotating the second spinner to cçntrifilge organic fibers from the molten organic material and to direct the organic fibers into contact with the veil of mineral fibers.
~ BRIEF DESCRIPTION OF DRAWINGS
Figure 1 is a sçh-Pm~tic cross-sec.tion~l view in elevation of app& ~ s for cofiberizing glass fibers and fibers of polymeric m~teri~l accoldil1g to the invention.
-WO 96t20140 PCI~/US95/15239 Figure 2 is a sch~ ic cross-sectiol ~l view in elevation ofthe polymer spinner of Figure 1, without molten polymer.
Figure 3 is a sçl-~..A~;c plan view ofthe polymer spinner of Figure 1, taken along lines 3-3 of Figure 2, showing molten polymer in the polymer spinner.
Figure 4 is a 5çl-e~ lic cross-sectiQn~l view in elevation of an embodiment of the pol,vmer spinner which conLahls a circular shield.
Figure 5 is a s~hem~fic cross-section~l view in elevation of an embodiment of the polymer spinner which cGI-lai--s a circular shield and a vertical interior wall.
Figure 6 is a scl-~ ;c cross-sectional view in elevation of an embodiment of 10 the polymer spinner which conlains a spinner cover.
BEST MODE FOR CARRYING OUT THE INVENTION
The invention will be described in terms of a glass fiber r~)lmillg operation, although it is to be understood that the invention can be practiced using other heat-softenable mineral material, such as rock, slag, and basalt.
As shown in Figure 1, glass spinner 10 rotates about axis of rotation 12 and is driven by the rotation of spindle 14. The glass spinner can be cast from a nickle/cobalt/chromium alloy as is co..Ll-.ollly known in the art. The spinner pc~i~he~al wall has numerous orifices 16 for the centrifugation of glass fibers, and prere.ably has between about 2,000 and about 50,000 orifices.
The glass spinner is supplied by molten stream of glass 18, which is centrifuged through the walls of the spinner in the form of glass fibers 20. The glass fibers are ~ ed in a soft, atten~l~kle state h~ .e~ lP~ly outside the spinner by the heat from annular burner 22, ~lthollgh in some glass fiber operations an external burner is not required. The radially traveling glass fibers are turned down by annular blower 24 into a 25 cylindrically shaped veil 26 of fibers, traveling dow..wardly, i.e., in the direction ofthe axis of the spinner. The process for creating the dow..w~dly moving cylindrical veil of glass fibers is well-known in the art.
Po.~itioned beneath the glass spinner is a second rotating spinner for distributing molten organic material into contact with the veil from a position within the 30 veil. In the embodiment shown in Figure 1, the second spinner is a polymer spinner 28, for distributing polymeric material into contact with the veil. The polymer spinner can be cast from nickle/cobalt/chromium alloy as used for the pro~lu~tion of glass fibers, or can be any other suitable spinner such as one from welded sl~inless steel. The polymer spinner p~.ipht;l~l wall has m~ ulls oAfices for the centAfugation of asphalt fibers, and p,~rel~ly has between about 500 and about 25,000 orifices. A polymer spinner s~cc~s~fi~lly used in a 5 glass fiber/PET cofil,el~l~ process had appl-ox;~ çly 3,500 orifices.
It is to be understood that any organic material capable of being fibeAzed can be supplied to the second or polymer spinner. Particularly useful eY~mples of polymers include such higher molecn~r weight polymeric material as polyethylene terephth~l~te (PET), poly~.opylene or polyphenylene sulfide (PPS). Other organic mateAals sllit~ble for 10 making fibers include nylon, polyc~l,ollale, polystyrene, polyamide, resins, vaAous polyolefins, ~cph~lts~ and other thermoplastic and thermoset materials.
The polymer spinner can be mounted on or ~ttaçhed to the glass spinner.
Preferably, the polymer spinner is mounted, via polymer spindle 30, in a manner which s physical contact with the glass spinner to reduce the thermal heat ll~lsrer by15 con~lction to the polymer material and the polymer spinner. To that end, the polymer spindle is p.er~lably adapted with a mounting bracket 32 having spacing nubs 34 to reduce co~ lctive heat Ll~1srer from the glass spinner, as shown in Figure 2. The spindle length is sufflcient to enable the introduction of the polymer fibers at a desirable height in the veil. If the polymer spinner is too high, the polymer fibers may be degraded, and may penetrate 20 and flow through the veil.
The polymer material is supplied to the polymer spinner in the form of stream 36 of molten polymer m~t~ri~l As shown, this stream can be fed through the hollow portion of the spindle. The molten polymer can be produced or supplied by using extruder eq~lipment com~only known to those in the art of polymeric materials, such as PET. The 25 temperature at which the molten polymer material is supplied depends upon the nature of the polymer. Polypropylene typically has a temperature of about 500~F (260~C) as it e..,elges from the extruder. Asphalt runs cooler at about 400~F (204~C), while PPS runs hotter at about 600~F (316~C).
Depending on the viscosities, surface t~n~ion, and other parameters ofthe 30 polymeric material, and on the rotation rate and orifice sizes ofthe polymer spinner, polymer fibers 38 may be produced from the polymer spinner. The polymer fibers travel radially outwardly where they meet and illlel mh~gle with the mineral fibers. The il~te. ~--;l~gled glass fibers and polymer fibers can be collected on any suitable device, such as conveyor 40, and formed into a co.. ;l-gled product or mat 42.
Since the glass fibers and glass ~hlnGl.7 operate at a tenlpGla~ulG a~l,roAc~ -g5 2000~F (1093~C), the polymer fibers are rapidly thrust into a region of high tellllJGlal~lG, causing the polymer fibers to soften. It has been found that some of the polymer fibers melt, forming droplets or other particles which attach ~LGlllsGl.~es to some of the mineral fibers. Others ofthe polymer fibers retain their fibrous shape, reslllting in the plesence of polymer fibers in the final mineral fiber product. The reason that some ofthe polymeric 10 material retains its fibrous shape, while other portions ofthe material form polymeric particles which attach themselves to the mineral fibers, is not known. It may be that some of the polymer fibers do not soften to the extent required to cause them to lose their fibrous shape and turn into a more spherical shape. Alternatively, it may be that, ~lthou~h all polymer fibers are soft~ne~, only a portion of them come into contact with mineral fibers 15 while in a softened con~lition The delivery of the polymeric material within the polymer spinner is f~cilit~ted by causing the polymeric material to flow within col.~l..;L~, such as pipes 44. As shown in Figures 2 and 3, the pipes extend radially outwardly from the polymer spindle toward polymer spinner peripheral wall 46. In operation, the polymeric m~t~ri~l flows 20 downwardly in the polymer spindle, and radially outwardly through the pipes. The molten polymeric material forms a layer or head on the spinner peliphel~l wall, and is c~ntrifi1ged through polymer orifices 48 to form the polymer fibers.
The pipes have outlets 50, which can be merely the open ends of the pipes, or can be a means for restricting or metering the flow of polymeric material flowing through 25 the pipes. Preferably the pipe outlet and pipe di~meter are sized approplia~ely for the operating conditions to insure that no air can enter the pipes. By preventing air from re~ching the polymeric material within the pipes, degradation of the polymeric material will be delayed until after the polymeric material exits the pipes. Optionally, the pipe outlets can be adapted with n( 7.7.1es' The pipes can be any conduits suitable for delivery ofthe polymeric material.
Pipes succes~fillly used in a cor~ g1ing process with PET were one-quarter inch (6.35 mm) inside ~ ele~ s~ ess steel tubes. Preferably there are at least four pipes, and most preferably eight pipes, ~lthol1gh more or less can be employed. The pipes can be mol~nted for rotation at the same rotational rate as the polymer spinner, or at a di~e~
rate. Optionally, the pipes can be in~ tetl with a ceramic material or any other suitable 5 material, to further ...il~;...;~e the effects of radiant heat and hot gases entering the polymer spinner through the spinner top openil,g 52.
As shown in Figure 4, the polymer spinner can be adapted with a generally flat plate-like mellll)er to cover the molten polymeric material to ...;..;...;~e the exposure to heat. This ..,~;".ber can be anything suitable to protect the polymeric material, such as 10 shield 54, which can be made of stainless steel or any other appropliale material. The shield can be generally annular in shape, e~ct~n-ling radially outwardly from the polymer spindle 30 toward the polymer spinner peripheral wall. The shield and the polymer spinner bottom wall 56 define a generally annular space or cavity 58 on the bottom ofthe spinner.
During operation, the polymeric material will flow through spindle openings 60 to fill the 15 cavity. The shield can be de~igned to provide a narrow opening, cavity outlet 62, at the radially outward shield edge 64. The cavity outlet can restrict the flow of polymeric material toward the polymer spinner peripheral wall, in a manner similar to the fimr.tion of the pipe outlets. The cavity outlet can be annular in shape, or can be a series of slots circull~lt;lllially spaced around the shield. A prime fimction ofthe cavity outlet is to 20 prevent air from reaching the cavity so that a minimllm of polymer degradation takes place.
Degradation leads to vaporization and possible fire problems.
An alternative embodiment of the invention, shown in Figure 5, provides for an extension at the end of the shield to further block exposure of the polymeric material to air and heat from sources external to the polymer spinner. Vertical interior wall 66 can be 25 positioned radially inwardly from the polymer spinner peliphel~l wall to define annular vertical cavity 68 where a body or head of polymeric material can ~ccumlll~te without exposure to air.
As shown in Figure 6, the shielding of the polymeric material can be accompli~hed by positioning a blocking means, such as spinner cover 70, at the top ofthe 30 polymer spinner. As shown, the molten polymeric material drops dowl,w~dly through the polymer spindle, flows through the spindle openings into the spinner, flows radially WO 96/20140 PCrlUS9SI1~;239 oulw~dly on the polymer spinner bottom wall and up the pcl;~h~l wall, and through the orifices to form polymer fibers.
It will be evident from the forego;l~ that various mo~ific~tionc can be made to this invention. Such, however, are considered as being within the scope of the invention.
INDUSTRIAL APPLICABILITY
The invention can be useful in the production of fibrous products of co",."i,~gled glass and polymer fibers for use as structural and thermal insulation products.
Claims (15)
1. The method for fiberizing mineral material (18) with organic material (36) comprising;
a. centrifuging mineral fibers (20) from molten mineral material (18) with a first rotating spinner (10);
b. changing the direction of the mineral fibers (20) to form a downwardly moving veil (26) of mineral fibers (20);
c. establishing a flow of molten organic material (36) moving toward a second rotating spinner (28) positioned within the veil (26);
d. dividing the flow of molten organic material (36) into a plurality of streams, e. directing, by means of conduits (44), individual ones of the plurality of streams toward the peripheral wall (46) of the second rotating spinner (28), the conduits (44) shielding the molten organic material (36) from heat from the first rotating spinner (10);
f. centrifuging organic fibers (38) from the molten organic material (36), and, g. directing the organic fibers (38) into contact with the veil (26) of mineral fibers (20).
a. centrifuging mineral fibers (20) from molten mineral material (18) with a first rotating spinner (10);
b. changing the direction of the mineral fibers (20) to form a downwardly moving veil (26) of mineral fibers (20);
c. establishing a flow of molten organic material (36) moving toward a second rotating spinner (28) positioned within the veil (26);
d. dividing the flow of molten organic material (36) into a plurality of streams, e. directing, by means of conduits (44), individual ones of the plurality of streams toward the peripheral wall (46) of the second rotating spinner (28), the conduits (44) shielding the molten organic material (36) from heat from the first rotating spinner (10);
f. centrifuging organic fibers (38) from the molten organic material (36), and, g. directing the organic fibers (38) into contact with the veil (26) of mineral fibers (20).
2. The method of claim 1 in which the conduits (44) are rotating at the same speed as the second rotating spinner (28).
3. The method of claim 2 in which the conduits (44) are insulated.
4. The method of claim 1 in which the conduits (44) have conduit outlets (50), and including the step of restricting the flow of molten organic material (36) through the conduit outlets (50) so that no air enters the conduits (44).
5. The method for fiberizing mineral material (18) with organic material (36) comprising:
a. centrifuging mineral fibers (20) from molten mineral material (18) with a first rotating spinner (10);
b. changing the direction of the mineral fibers (20) to form a downwardly moving veil (26) of mineral fibers (20);
c. establishing a flow of molten organic material (36) moving toward a second rotating spinner (28) positioned within the veil (26);
d. dividing the flow of molten organic material (36) into a plurality of streams;
e. directing, by means of conduits (44), individual ones of the plurality of streams toward the peripheral wall (46) of the second rotating spinner (28), the conduits (44) having conduit outlets (50);
f restricting the flow of molten material (36) through the conduit outlets (50) so that no air enters the conduits (44);
g. centrifuging organic fibers (38) from the molten organic material (36); and, h. directing the organic fibers (38) into contact with the veil (26) of mineral fibers (20).
a. centrifuging mineral fibers (20) from molten mineral material (18) with a first rotating spinner (10);
b. changing the direction of the mineral fibers (20) to form a downwardly moving veil (26) of mineral fibers (20);
c. establishing a flow of molten organic material (36) moving toward a second rotating spinner (28) positioned within the veil (26);
d. dividing the flow of molten organic material (36) into a plurality of streams;
e. directing, by means of conduits (44), individual ones of the plurality of streams toward the peripheral wall (46) of the second rotating spinner (28), the conduits (44) having conduit outlets (50);
f restricting the flow of molten material (36) through the conduit outlets (50) so that no air enters the conduits (44);
g. centrifuging organic fibers (38) from the molten organic material (36); and, h. directing the organic fibers (38) into contact with the veil (26) of mineral fibers (20).
6. The method of claim 5 in which the conduits (44) are rotating at the same rotational rate as the second rotating spinner (28).
7. The method of claim 5 in which the conduits (44) act to shield the molten organic material (36) from heat from the first rotating spinner (10).
8. The method of claim 7 in which the conduits (44) are insulted
9. The method for fiberizing mineral material (18) with organic material (36) comprising:
a. centrifuging mineral fibers (20) from molten mineral material (18) with a first rotating spinner (10);
b. changing the direction of the mineral fibers (20) to form a downwardly moving veil (26) of mineral fibers (20);
c. rotating a second spinner (28) positioned within the veil (26) and rotatably mounted on a hollow spindle (30), the second spinner (28) having aperipheral wall (46), a bottom wall (56), and a generally circular shield (54) positioned above the bottom wall (56), the shield (54) extending radially outwardly from the spindle (30) toward the peripheral wall (46) of the second spinner (28), the shield (54) and the spinner bottom wall (56) defining an annular cavity (58) having at least one cavity outlet (62) positioned at the radially outward edge (64) of the shield (54);
d. establishing a flow of molten organic material (36) moving downwardly through the spindle (30);
e. directing the molten organic material (36) from the spindle (30) into the cavity (58) and through the cavity outlet (62) toward the spinner peripheral wall (46);
f. restricting the flow of molten material (36) through the cavity outlet (62) so that no air enters the cavity (58);
g. centrifuging organic fibers (38) from the molten organic material (36); and, h. directing the organic fibers (38) into contact with the veil (26) of mineral fibers (20).
a. centrifuging mineral fibers (20) from molten mineral material (18) with a first rotating spinner (10);
b. changing the direction of the mineral fibers (20) to form a downwardly moving veil (26) of mineral fibers (20);
c. rotating a second spinner (28) positioned within the veil (26) and rotatably mounted on a hollow spindle (30), the second spinner (28) having aperipheral wall (46), a bottom wall (56), and a generally circular shield (54) positioned above the bottom wall (56), the shield (54) extending radially outwardly from the spindle (30) toward the peripheral wall (46) of the second spinner (28), the shield (54) and the spinner bottom wall (56) defining an annular cavity (58) having at least one cavity outlet (62) positioned at the radially outward edge (64) of the shield (54);
d. establishing a flow of molten organic material (36) moving downwardly through the spindle (30);
e. directing the molten organic material (36) from the spindle (30) into the cavity (58) and through the cavity outlet (62) toward the spinner peripheral wall (46);
f. restricting the flow of molten material (36) through the cavity outlet (62) so that no air enters the cavity (58);
g. centrifuging organic fibers (38) from the molten organic material (36); and, h. directing the organic fibers (38) into contact with the veil (26) of mineral fibers (20).
10. The method of claim 9 in which the shield (54) acts to shield the molten organic material (36) from heat from the first rotating spinner (10).
11. The method of claim 9 in which the cavity outlet is an annular slot.
12. The method of claim 9 in which the shield (54) has an annular flange (66) extending vertically upward to define an annular vertical cavity (68) which shields the molten organic material (36) positioned on the spinner peripheral wall (46) from heat from the first rotating spinner (10).
13. The method of claim 9 in which the shield (54) is insulated
14. The method for fiberizing mineral material (18) with organic material (36) comprising:
a. centrifuging mineral fibers (20) from molten mineral material (18) with a first rotating spinner (10);
b. changing the direction of the mineral fibers (20) to form a downwardly moving veil (26) of mineral fibers (20);
c. rotating a second spinner (28) positioned within the veil (26) and rotatably mounted on a hollow spindle (30), the second spinner (28) having aperipheral wall (46), a bottom wall (56), and a generally circular shield (54) oriented generally parallel to the bottom wall (56), the shield (54) extending radially outwardly from the spindle (30) toward the top of the peripheral wall (46) of the second spinner (28), the shield (54) being effective to block hot gases and radiant heat from entering the second spinner (28);
d. establishing a flow of molten organic material (36) moving downwardly through the spindle (30);
e. directing the molten organic material (36) from the spindle (30) toward the spinner peripheral wall (46);
f. centrifuging organic fibers (38) from the molten organic material (36); and, g. directing the organic fibers (38) into contact with the veil (26) of mineral fibers (20).
a. centrifuging mineral fibers (20) from molten mineral material (18) with a first rotating spinner (10);
b. changing the direction of the mineral fibers (20) to form a downwardly moving veil (26) of mineral fibers (20);
c. rotating a second spinner (28) positioned within the veil (26) and rotatably mounted on a hollow spindle (30), the second spinner (28) having aperipheral wall (46), a bottom wall (56), and a generally circular shield (54) oriented generally parallel to the bottom wall (56), the shield (54) extending radially outwardly from the spindle (30) toward the top of the peripheral wall (46) of the second spinner (28), the shield (54) being effective to block hot gases and radiant heat from entering the second spinner (28);
d. establishing a flow of molten organic material (36) moving downwardly through the spindle (30);
e. directing the molten organic material (36) from the spindle (30) toward the spinner peripheral wall (46);
f. centrifuging organic fibers (38) from the molten organic material (36); and, g. directing the organic fibers (38) into contact with the veil (26) of mineral fibers (20).
15. The method of claim 14 in which the shield (54) is insulated.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US08/363,471 US5523032A (en) | 1994-12-23 | 1994-12-23 | Method for fiberizing mineral material with organic material |
| US08/363,471 | 1994-12-23 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2208014A1 true CA2208014A1 (en) | 1996-07-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002208014A Abandoned CA2208014A1 (en) | 1994-12-23 | 1995-11-27 | Method for fiberizing mineral material with organic material |
Country Status (10)
| Country | Link |
|---|---|
| US (1) | US5523032A (en) |
| EP (1) | EP0799163B1 (en) |
| JP (1) | JPH10511338A (en) |
| KR (1) | KR980700937A (en) |
| CN (1) | CN1051533C (en) |
| AT (1) | ATE190294T1 (en) |
| AU (1) | AU691384B2 (en) |
| CA (1) | CA2208014A1 (en) |
| DE (1) | DE69515510T2 (en) |
| WO (1) | WO1996020140A1 (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5983586A (en) * | 1997-11-24 | 1999-11-16 | Owens Corning Fiberglas Technology, Inc. | Fibrous insulation having integrated mineral fibers and organic fibers, and building structures insulated with such fibrous insulation |
| US5876529A (en) * | 1997-11-24 | 1999-03-02 | Owens Corning Fiberglas Technology, Inc. | Method of forming a pack of organic and mineral fibers |
| US5900206A (en) * | 1997-11-24 | 1999-05-04 | Owens Corning Fiberglas Technology, Inc. | Method of making a fibrous pack |
| US6113818A (en) * | 1997-11-24 | 2000-09-05 | Owens Corning Fiberglas Technology, Inc. | Method and apparatus for integrating organic fibers with mineral fibers |
| US6170298B1 (en) * | 1999-04-30 | 2001-01-09 | Ottawa Fibre Inc. | Glass spinner with partitioned spinning head |
| US20040176003A1 (en) * | 2001-09-06 | 2004-09-09 | Alain Yang | Insulation product from rotary and textile inorganic fibers and thermoplastic fibers |
| US20040180598A1 (en) * | 2001-09-06 | 2004-09-16 | Alain Yang | Liquid sorbent material |
| US20040192141A1 (en) * | 2001-09-06 | 2004-09-30 | Alain Yang | Sub-layer material for laminate flooring |
| US20050160711A1 (en) * | 2004-01-28 | 2005-07-28 | Alain Yang | Air filtration media |
| US20040163724A1 (en) * | 2001-09-06 | 2004-08-26 | Mark Trabbold | Formaldehyde-free duct liner |
| US20030124304A1 (en) * | 2001-12-31 | 2003-07-03 | Michael Rajendran S. | Vehicle energy absorbing element |
| US20030124940A1 (en) * | 2001-12-31 | 2003-07-03 | Michael Rajendran S. | Tunable or adjustable liner for selectively absorbing sound energy and related methods |
| US20060057351A1 (en) * | 2004-09-10 | 2006-03-16 | Alain Yang | Method for curing a binder on insulation fibers |
| CN102084043B (en) * | 2008-10-02 | 2013-04-10 | 松下电器产业株式会社 | Nanofiber manufacturing device |
| WO2012135445A1 (en) | 2011-03-30 | 2012-10-04 | Owens Corning Intellectual Capital, Llc | High thermal resistivity insulation material with opacifier uniformly distributed throughout |
| US10351972B2 (en) | 2014-03-21 | 2019-07-16 | Neworld E & E Pty Ltd. | Multifunctional spinning device |
| WO2015139659A1 (en) * | 2014-03-21 | 2015-09-24 | 馨世工程教育有限公司 | Centrifugal spinning device used for producing composite nano and micron fibers with multiple structures |
| FI127818B (en) | 2017-09-01 | 2019-03-15 | Paroc Group Oy | Equipment and method for producing mineral wool |
| CN112011837B (en) * | 2019-05-29 | 2025-02-21 | 山西福特沃德科技股份有限公司 | Friction type centrifugal spinning mechanism and method |
| CN114086318B (en) * | 2020-08-25 | 2023-02-10 | 华中科技大学 | A high-speed cyclone coordinated supergravity melt-blown spinning device and its application method |
Family Cites Families (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2944284A (en) * | 1957-10-09 | 1960-07-12 | United States Gypsum Co | Binder distribution and atomizing system for fiberizing apparatus |
| NL279172A (en) * | 1961-06-02 | |||
| US3830638A (en) * | 1967-05-11 | 1974-08-20 | Certain Teed Prod Corp | Apparatus for manufacture of plates or shaped sheets having a base of mineral fibers, particularly glass fibers |
| US4277436A (en) * | 1978-04-26 | 1981-07-07 | Owens-Corning Fiberglas Corporation | Method for forming filaments |
| US4224373A (en) * | 1978-12-26 | 1980-09-23 | Owens-Corning Fiberglas Corporation | Fibrous product of non-woven glass fibers and method and apparatus for producing same |
| SU998398A2 (en) * | 1981-07-08 | 1983-02-23 | Всесоюзный Научно-Исследовательский Институт Теплоизоляционных И Акустических Строительных Материалов И Изделий | Apparatus for making fibers from silica melt |
| US4759785A (en) * | 1982-04-06 | 1988-07-26 | Isover Saint-Gobain | Glass fiberization method |
| US4756732A (en) * | 1982-04-06 | 1988-07-12 | Isover Saint-Gobain | Glass fiberization method |
| SU1477700A1 (en) * | 1987-04-09 | 1989-05-07 | Всесоюзный Государственный Проектно-Конструкторский Институт По Машинам Для Промышленности Строительных Материалов "Гипростроммашина" | Apparatus for process for mineral fibre |
| US4832723A (en) * | 1988-02-16 | 1989-05-23 | Manville Corporation | Apparatus for producing desired fiber column configuration |
| US5242633A (en) * | 1991-04-25 | 1993-09-07 | Manville Corporation | Method for producing organic fibers |
| US5123949A (en) * | 1991-09-06 | 1992-06-23 | Manville Corporation | Method of introducing addivites to fibrous products |
| US5232638A (en) * | 1992-09-18 | 1993-08-03 | Schuller International, Inc. | Apparatus and method for introducing additives to fibrous products |
| US5490961A (en) * | 1993-06-21 | 1996-02-13 | Owens-Corning Fiberglas Technology, Inc. | Method for manufacturing a mineral fiber product |
| US7759974B1 (en) * | 2008-07-17 | 2010-07-20 | Xilinx, Inc. | Pipelined unidirectional programmable interconnect in an integrated circuit |
-
1994
- 1994-12-23 US US08/363,471 patent/US5523032A/en not_active Expired - Fee Related
-
1995
- 1995-11-27 JP JP8520450A patent/JPH10511338A/en active Pending
- 1995-11-27 AU AU42439/96A patent/AU691384B2/en not_active Ceased
- 1995-11-27 EP EP95940811A patent/EP0799163B1/en not_active Expired - Lifetime
- 1995-11-27 DE DE69515510T patent/DE69515510T2/en not_active Expired - Fee Related
- 1995-11-27 CN CN95197462A patent/CN1051533C/en not_active Expired - Fee Related
- 1995-11-27 AT AT95940811T patent/ATE190294T1/en not_active IP Right Cessation
- 1995-11-27 WO PCT/US1995/015239 patent/WO1996020140A1/en not_active Ceased
- 1995-11-27 CA CA002208014A patent/CA2208014A1/en not_active Abandoned
- 1995-11-27 KR KR1019970704324A patent/KR980700937A/en not_active Abandoned
Also Published As
| Publication number | Publication date |
|---|---|
| CN1174542A (en) | 1998-02-25 |
| AU4243996A (en) | 1996-07-19 |
| EP0799163A1 (en) | 1997-10-08 |
| KR980700937A (en) | 1998-04-30 |
| DE69515510D1 (en) | 2000-04-13 |
| WO1996020140A1 (en) | 1996-07-04 |
| AU691384B2 (en) | 1998-05-14 |
| DE69515510T2 (en) | 2000-07-06 |
| ATE190294T1 (en) | 2000-03-15 |
| MX9704685A (en) | 1997-10-31 |
| US5523032A (en) | 1996-06-04 |
| JPH10511338A (en) | 1998-11-04 |
| EP0799163B1 (en) | 2000-03-08 |
| CN1051533C (en) | 2000-04-19 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| FZDE | Discontinued |